Doubly colonized. Very porous border with supplies all engineered in ‘freedum units’.

Some industries have been extra slow to convert, usually due to supply chain dependencies. Also generations have to die before giving up key habits drilled into them as kids. I distinctly remember grandparents talking about mass in stones, yet canadian-born.

Settler states can sometimes be stuck in preserve old ways while imperial centers move on. Metis fiddlers sent a delegation to Scotland (? or thereabouts) to reteach them forgotten reels from a few hundred years ago.